19980901820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{2357}}^1$

素因数の和:2532

約数の個数: 144

約数和(自身を含む): 48050682624

約数和(自身を除く): 28069780804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 113, 121, 124, 155, 220, 226, 242, 310, 341, 452, 484, 565, 605, 620, 682, 1130, 1210, 1243, 1364, 1705, 2260, 2357, 2420, 2486, 3410, 3503, 3751, 4714, 4972, 6215, 6820, 7006, 7502, 9428, 11785, 12430, 13673, 14012, 15004, 17515, 18755, 23570, 24860, 25927, 27346, 35030, 37510, 38533, 47140, 51854, 54692, 68365, 70060, 73067, 75020, 77066, 103708, 129635, 136730, 146134, 154132, 192665, 259270, 266341, 273460, 285197, 292268, 365335, 385330, 423863, 518540, 532682, 570394, 730670, 770660, 803737, 847726, 1065364, 1140788, 1331705, 1425985, 1461340, 1607474, 1695452, 2119315, 2663410, 2851970, 2929751, 3214948, 4018685, 4238630, 5326820, 5703940, 5859502, 8037370, 8256571, 8477260, 8841107, 11719004, 14648755, 16074740, 16513142, 17682214, 29297510, 32227261, 33026284, 35364428, 41282855, 44205535, 58595020, 64454522, 82565710, 88411070, 90822281, 128909044, 161136305, 165131420, 176822140, 181644562, 322272610, 363289124, 454111405, 644545220, 908222810, 999045091, 1816445620, 1998090182, 3996180364, 4995225455, 9990450910, 19980901820]

約数ペア:

[(1, 19980901820), (2, 9990450910), (4, 4995225455), (5, 3996180364), (10, 1998090182), (11, 1816445620), (20, 999045091), (22, 908222810), (31, 644545220), (44, 454111405), (55, 363289124), (62, 322272610), (110, 181644562), (113, 176822140), (121, 165131420), (124, 161136305), (155, 128909044), (220, 90822281), (226, 88411070), (242, 82565710), (310, 64454522), (341, 58595020), (452, 44205535), (484, 41282855), (565, 35364428), (605, 33026284), (620, 32227261), (682, 29297510), (1130, 17682214), (1210, 16513142), (1243, 16074740), (1364, 14648755), (1705, 11719004), (2260, 8841107), (2357, 8477260), (2420, 8256571), (2486, 8037370), (3410, 5859502), (3503, 5703940), (3751, 5326820), (4714, 4238630), (4972, 4018685), (6215, 3214948), (6820, 2929751), (7006, 2851970), (7502, 2663410), (9428, 2119315), (11785, 1695452), (12430, 1607474), (13673, 1461340), (14012, 1425985), (15004, 1331705), (17515, 1140788), (18755, 1065364), (23570, 847726), (24860, 803737), (25927, 770660), (27346, 730670), (35030, 570394), (37510, 532682), (38533, 518540), (47140, 423863), (51854, 385330), (54692, 365335), (68365, 292268), (70060, 285197), (73067, 273460), (75020, 266341), (77066, 259270), (103708, 192665), (129635, 154132), (136730, 146134)]